Mount for key-bars.



0. THIEME,

MOUNT FOR KEY BARS.

APPLICATION F'ILED APR.23. I917- Lgm gwu Patented Jan. 15, 1911s.

I71 van/m: fllffa 1 mm as a eoe.

o'r'ro'rnrnmn, or sit. Louis, MISSOURI, assrenon T0 moon-nornms nrnnrn'e MACHINE COMPANY, or szr. LoUIs, MISSOURI, A oonronarron or uIssOu'nI.

MOUNT FOE, KEY-BARS.

Specification of Letters Eatent. Pail-tented Jamil, 1L5, 11.91%.

Original application filed August 1, 1916, Serial No. 112,534. Divided and this application tiled April ea,

1917. Serial No. 163,860.

To all whom it may concern:

Be it known that I, O'r'ro THIEME, a citizen of the United States, residing at city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Mounts for Key-Bars, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, forming part of this specification, in which- Figure 1 is a detail view of the parts detached of my improved mount for key bars. Fig. 2 is a vertical sectional view through the mount showing the parts assembled.

This invention relates to a new and use ful improvement in mounts for key bars for calculatin machines, typewriting machines, etc. the o ject being to .construct a mount of the character described which enables the key bar to be removed from above. Another object is to so construct the mount that the key bar will be freely held in position and in the event that the securing screw becomes loosened, the parts will remain operative,

at least for some considerable time.

This application is a division of application filed August 1, 1916, Serial No. 112,534 for improvements in calculating machines.

In the drawings, 1 indicates a key mounted for vertical movement in guiding plates,

-2 a bell crank to which the lower end of the 7 key is operatively connected, and 3 is the key bar. 4 1s a stud riveted or otherwise secured to the bell crank and having a reduced annulus'5 in its outer end, the shoulders of which annulus are preferably square, as shown.

6 is a post having a stem 7 at its lower end and a slot 8 across its upper face by which said post may be screwed into the base 9 of the machine. 10 is a threaded opening extending longitudinally of the post whose lower end is intersected by a smooth bore 11, said smooth bore being of the size to receive the outer end of the stud 4 and permit the same to rotate freely. 12 is a. screw the lower end of which is preferably square and of a size to fit snugly between the shoulders of the annulus 5. This screw is of such length that when it is introduced into the threaded opening 10, and screwed home, its

lower end will be located in the reduced portionof stud I.

From the above it will. be noted that in assembling the arts, the post is first screwed into position, a ter' which the bell crank and stud are arranged in place, and finally the longitudinal displacement of the stud due to the fact that in the construction illustrated the bell crank lever exerts a straight pull on the rod 3. To remove the bell crank lever, it is only necessary to unscrew the screw 12 until it is disengaged from the shoulders .of the stud 4:, at which time the bar 3 may be disconnected, if necessary, and the forward end of the bell crank lever disengaged from its key stem. However, these details form no part of my presenjn invention. l

I have not shown the spring for lifting the key stem and will not describe the same further than to mention that it is preferable for the lower end of the key stem to be slotted to receive the forward end of the bell crank lever, thus dispensing with any attachin devices between these parts.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: v

1. A mount of the character described comprising a post having a longitudinal threaded bore, an intersecting smooth bore,

a key bar provided with a stud having an 2. In a key bar mount of the character described, the combination of a post having a threaded stem at one end and a slot at its opposite end, whereby said post may be removably mounted in a suitable support, said post also having a longitudinally disposed till threaded bore and an intersecting smooth bore, in combination with a key bar provided with a' stud having a reduced annulus which annulus is designed to register with 5 the threaded bore in said post, and a screw in said threaded bore whose lower end is receiyed in said annulus whenthe screw is turned home,' thereby preventing longitudinal displacement of said stud but-permitting rotary movement thereof.

In testilnony whereof I hereunto affix my signature 1n the resence of two witnesses,

this 21st day of pril, 1917. s

. OTJTO THIEME. 

